error[E0277]: the size for values of type `X` cannot be known at compilation time --> $DIR/unsized3.rs:7:13 | LL | f2::(x); | ^ doesn't have a size known at compile-time ... LL | fn f2(x: &X) { | -- - required by this bound in `f2` | = help: the trait `std::marker::Sized` is not implemented for `X` = note: to learn more, visit = help: consider adding a `where X: std::marker::Sized` bound error[E0277]: the size for values of type `X` cannot be known at compilation time --> $DIR/unsized3.rs:18:13 | LL | f4::(x); | ^ doesn't have a size known at compile-time ... LL | fn f4(x: &X) { | -- - required by this bound in `f4` | = help: the trait `std::marker::Sized` is not implemented for `X` = note: to learn more, visit = help: consider adding a `where X: std::marker::Sized` bound error[E0277]: the size for values of type `X` cannot be known at compilation time --> $DIR/unsized3.rs:33:8 | LL | fn f5(x: &Y) {} | -- - required by this bound in `f5` ... LL | f5(x1); | ^^ doesn't have a size known at compile-time | = help: within `S`, the trait `std::marker::Sized` is not implemented for `X` = note: to learn more, visit = help: consider adding a `where X: std::marker::Sized` bound = note: required because it appears within the type `S` error[E0277]: the size for values of type `X` cannot be known at compilation time --> $DIR/unsized3.rs:40:8 | LL | f5(&(*x1, 34)); | ^^^^^^^^^^ doesn't have a size known at compile-time | = help: within `S`, the trait `std::marker::Sized` is not implemented for `X` = note: to learn more, visit = help: consider adding a `where X: std::marker::Sized` bound = note: required because it appears within the type `S` = note: only the last element of a tuple may have a dynamically sized type error[E0277]: the size for values of type `X` cannot be known at compilation time --> $DIR/unsized3.rs:45:9 | LL | f5(&(32, *x1)); | ^^^^^^^^^ doesn't have a size known at compile-time | = help: within `({integer}, S)`, the trait `std::marker::Sized` is not implemented for `X` = note: to learn more, visit = help: consider adding a `where X: std::marker::Sized` bound = note: required because it appears within the type `S` = note: required because it appears within the type `({integer}, S)` = note: tuples must have a statically known size to be initialized error[E0277]: the size for values of type `X` cannot be known at compilation time --> $DIR/unsized3.rs:45:8 | LL | fn f5(x: &Y) {} | -- - required by this bound in `f5` ... LL | f5(&(32, *x1)); | ^^^^^^^^^^ doesn't have a size known at compile-time | = help: within `({integer}, S)`, the trait `std::marker::Sized` is not implemented for `X` = note: to learn more, visit = help: consider adding a `where X: std::marker::Sized` bound = note: required because it appears within the type `S` = note: required because it appears within the type `({integer}, S)` error: aborting due to 6 previous errors For more information about this error, try `rustc --explain E0277`.